hbnutil.java

用mysql和jdbc servlet 写银行管理系统

package com.tarena.ebank.persist;

import org.hibernate.HibernateException;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HbnUtil {
  private static SessionFactory sf;
  public static SessionFactory getSessionFactory(){
	  if(sf==null || sf.isClosed()){
		  try {
				sf = new Configuration()
				         .configure()
				         .buildSessionFactory();
		  } catch (HibernateException e) {
				e.printStackTrace();
		  }
	  }
	  return sf;
  }
  public static void release(){
	  if(sf!=null && !sf.isClosed()){
	     sf.close();
	  }
  }
}